Tool-holder-securing device.



G. H. HOLLM.

TOOL HOLDER SEGURINGv DEVICE.

APPLICATION FILED APR.15.1907.

@2294@9., Patented May18,1909.

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ensrsv n. notitie, or Bsrnerosr, ooNnnorroU',

Speciew'son of Letters Patent.

Patented may 1e, 1909.

Application filed April 15, 3307. Serial No. 368,434.

Stute oi' Connecticut, have' invented certain new and useful Improvements in 'l`ool' llolder-eeuring Devices, of which the following is o speeiiie ation. e

rl`his invention relates to new :in-d useful improvements in seeuringf devices, for tool holders or tools of metal working nutehines und especially to provide means for securing' suoli toolholders or tools \.'\"ithin the heads of said machines. 'lhe ohjeet heiner vto provide simple and e'll'eetive means wherein" the shank of it tool holder or tool7 indy he secured in a suitable socket of hesds sueh' its :tre eommonly employed on boring und turning' mills und turret lathes; to provide 'tor adjusting` the shrink of' sueh vtool holders or tools both vertically- :md rndinllv within the soeliet of :i tool holdinpY heed sind for i'rmhY securing sttid'holder or tool against turning- M'hen in either of suleh' ndjusted positionsy rUpon the.seeinnpnnying drnnings 'formingl n port of this speeihezttion, similxtr elnniteters 'of' referenee denote 4like or eo'rrespondine parts, throughout the several heures, and ol: which,l A

Figure l, shows'aI front elevation olt :t detrehed turret head psrtinlbY broken anni', and showing' n tool holder seeured in one ol' the sockets. Fig. 2, is e detsehed"trent ele vation oi' the, tool holder shoivn in Fie'. Fig. ,3, shows L longitudilutl seetionnl view throughsJ elsi'nping member'forming: n. pzirt of my seeuring deviee, and Fie. l, is it, de tnehed plain View ot" the tool holder shown Vin Figs. i and 2. i'

in the neeoinpenyingq drawing heini having n series olf soeliets ier the reeep tion o'l" tool holders or speeiitl tools, sueh ns nre commonly' employer l lnivel shown my invei'it-ion as applied tout turrety Whole which as shown is e six sided head having therein en equal number of cylindrical soekets 5 arranged radially with respect to the center head and adapted to receive the el/vlindriesl shank Aportieri 7 vto .be inserted therein and hearing a head 8. The upper end portion of the said shank 7 is out away to form an abutting shoulder 9, which is designed to receive :ind engage :i pin 't0 secured in the vhead and extending; erossvvise. through the inner end portion of the soelret 6 before mentioned. This device obviously forms a. positive preventive against the shztnl turning within the head, vetreznlilv permits the said slur-nk to he inserted or removed when not helil hy any other menus. f

in addition te the above shoulder and pin eonneetion u'hieh is designed te hold the shank against roinrv nn'ivenwnt l provide -at-elmnpmg deviee 'for holding' the shank up in engagement with the pin its 1s clearly shown in F l and 3, and whieh oon'iprises 'held against turningr h v ztserew 19.,

stiro perl binding; plug` ll. and l2 which snugly lits inthe here' 13 ol the head and is The sdjoininpY end and side surfnees of the plug :tre eut anni' :is shown at lit in Fig. 3, to re- 'eeive :uid engage the peripheryY of the o vlindrienltslmnk 7. The pin 17 serves to insure 'proper olinementot the inner and outer memhers l1 :rnd l? ot the plug; und 'further prevents turning or' the holt 15. The head ot5 holt lis reeessed in the inner member 11 of4 the plug' nud extends longitui'linnlly and eentrell;v through the two members of the plue7 und is provided with n thread upon its outer end to reeeive the nut 12% whereby the itwo inenhers univ he z. ljusted to or 'from eneh other 't o engage or release the side of the shrink in the nmnner before speeied.

ld the produet/mn ut roughinpr or other .heavy ents( :is h y n euttingt tool (not shown) l in eonneetion nith i horing :rnd turning' untehines :ind turret` he secured Within turret.- he nds of this'elsss h vmeans ot in v device.

ln detail 5 represents the turret hond :is s

.i lntve shown :is ittitehed to sztid through"y the npplient it is neeessm'v .tor-the seid euttine' tool to' be seeiuelv held, :ind therefore while performing' such outs the slninli is designed to he engaged l the pin which positiveliY prevents slipi'iing. Un .the other l'n'ind when producing' lighter er linishing ents the tool in`question muy' be held in :t lower position from that oeeupied in' performing snid roughing,

he strain upon it is no( so greet it is not important that sueh e. positive grip should he employed, therefore l may lower the shank troni the position shown in Fig. 1

ents, nnd :is t

ion oi" my tool holder,

to that shown in dotted lines in the same gure and secure it by the binder plug Without the .assistance of the pin.

Having thus described my invention What I claim and desire to secure by Letters Patent isz- 1. In a tool holder securin device for lathes, the combination with a ody havin a cylindrical socket, of a cylindrical too shank to fit in said socket, a binder plug arranged to grip the side of the shank, and interengaging means between the body and shank in rear of the binder plug for preventing rotation of the shank and' adapted to be dilserllilgaged by longitudinal movement of the s a f `means for 2. In a tool holder securing device for lathes, the combination with a head having a socket adapted to receive a tool shank, an intersecting opening, a divided binder plug arranged in said opening to grip the side of the shank, means for maintaining the parts of said plug in alinement, and preventing angular movement of the plug. y f

S1 ned at Bridgeport, in the county of Fair eld, and State of Connecticut this 10th day of April'A. D., 1907. n

- GUS'IAV H. HOLLM. vWitnesses C. M. NEWMAN, v E. P. BULLARD, Jn. 

